Engine Analyzer... library of parts and values
09-02-2005, 03:00 AM
#16
Race Director
Thread Starter
Originally Posted by Skunk Workz
I made that spec...if you have it as a user example from the EA. I have better info on that head now.... The Lindsey ST3 head and Intercooler have these specs. I also have most other specs on the 951,both stock and several other vendor's products,like flow figures on the LR heads,both St2 and 3,and the stock head,intake specs/flows,TB flow,etc.
Head
LINDSEY RACING STAGE 3 Porting with 47,8mm intake valves
Intake
Valve diameter 47.8
Average port diameter 42.13
Port length 82.5
Single flow coef .532 (I have a full flow table available...)
Anti-reversion % 0
Compression ratio 8
Exhaust
Valve diameter 38 (Lindsey's HighVelocity Option...)
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0
Chamber design Typical Wedge
intercooler CFM 141...(from flow numbers)
Head
LINDSEY RACING STAGE 3 Porting with 47,8mm intake valves
Intake
Valve diameter 47.8
Average port diameter 42.13
Port length 82.5
Single flow coef .532 (I have a full flow table available...)
Anti-reversion % 0
Compression ratio 8
Exhaust
Valve diameter 38 (Lindsey's HighVelocity Option...)
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0
Chamber design Typical Wedge
intercooler CFM 141...(from flow numbers)
09-02-2005, 03:02 AM
#17
Race Director
Thread Starter
Dan,
Through luck or just lots of wrong inputs that even out, I got my curve almost exactly as seen on the dyno. It does take some effort, hence the library I am trying to kick start... more accurate inputs, the more use it will be for everyone, as such, if an tuner or vendor can help... feel free!
Through luck or just lots of wrong inputs that even out, I got my curve almost exactly as seen on the dyno. It does take some effort, hence the library I am trying to kick start... more accurate inputs, the more use it will be for everyone, as such, if an tuner or vendor can help... feel free!
09-02-2005, 04:47 AM
#18
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Originally Posted by NZ951
Thanks a lot mate, good shizzle. Is that IC number stock IC?
09-02-2005, 06:40 AM
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Originally Posted by NZ951
Hang on, the LR site says its 248 CFM? What am I missing here? Something in their calculation?
09-02-2005, 10:08 AM
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Originally Posted by DanG
Skunk, can you post up some more of the stock data? Maybe even the saved file from the program? I have a feeling some of my "estimates" were way off.
09-02-2005, 11:08 AM
#23
Three Wheelin'
I have EA Pro v3.3 This is the configuration I used. (You might have to delete the '.txt' off the end of the filename)
I'm positive I overestimated some of the flow numbers. And I still haven't found anything resembling a compressor map for my K27/8, so that was all a guess. I just rounded down from the 60-1 stuff.
I'm positive I overestimated some of the flow numbers. And I still haven't found anything resembling a compressor map for my K27/8, so that was all a guess. I just rounded down from the 60-1 stuff.
09-02-2005, 11:20 AM
#24
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Originally Posted by DanG
I'm positive I overestimated some of the flow numbers. And I still haven't found anything resembling a compressor map for my K27/8, so that was all a guess. I just rounded down from the 60-1 stuff.
Edit: Found it...it's for a K27/6,but all you need to do is calc the turbine nozzle dia and adjust the IC CFM.
Last edited by Skunk Workz; 09-02-2005 at 11:51 AM.
09-02-2005, 05:56 PM
#26
Race Director
Thread Starter
Originally Posted by Skunk Workz
They flowed at 28" I think...The EA uses 10" in pressure drop,so the number is lower. But,141CFM @ 10" is the same as 235.93 CFM @ 28"...so the one we tested was not up to par with what it said on their web page. Neither was any other flow spec,but...that's not my problem.
I will change the list, its great you have this info, just copy and paste the parameters and I will edit my first post to keep the list updated.
09-02-2005, 06:03 PM
#27
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Originally Posted by NZ951
Nice to know the Lindsey Racing numbers are overestimated. I wonder if Mike Lindsey will chime in here with an explanation.
09-02-2005, 06:07 PM
#28
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Thread Starter
Yeah I tried to open the file, it simply was not meaningful, almost random numbers. You could use the list of parameters I posted in the first posted and enter it from there, repost it and I will update the first post and add stock head... plan?
09-02-2005, 06:58 PM
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Originally Posted by NZ951
Shortblock specs
Bore: 100
Stroke: 78.9
# of Cylinders:4
Piston rings: 3 Standard tension
Rod lenght: 150
Piston Skirt: Typical
Bearing Size: 1.26 Calc
Piston Top: No coating
Cyl Leakage:Low Leakage
Cooling Fan type: Electric
Water pump & drive: Production Size
Engine+ Dyno Inertia: Eng only,Std Flywheel
Design: Typical Windage
Head
STOCK 951 HEAD
Intake port specs:.............................................Exhaust port Specs
# valves/Ports: 1valve &1 port...........................1 valve& 1 port
Intake valve dia: 45...........................................40
Avg port Dia: 41.39...........................................34.16
Port lenght: 82.5...............................................107.5
Anti-rev: 0%.....................................................0%
Intake flow table @ 28".......................Ex. Single Flow Coeff: 0.597
Valve lift "...........Flow CFM
0.0787................47,047
0,1575................95,524
0,2362...............146,386
0,31496.............168,395
0,3937...............178,596
0,4724...............194,373
0,53149..............201.73
CR: 8:1..................................................Material/ Coating: Aluminium
Chamber design: Typical Wedge...............Burn rating: Typical
LINDSEY RACING STAGE 3 Porting with 47,8mm intake valves
Intake
Valve diameter 47.8
Average port diameter 42.13
Port length 82.5
Single flow coef .532 (I have a full flow table available...)
Anti-reversion % 0
Compression ratio 8
Exhaust
Valve diameter 38 (Lindsey's HighVelocity Option...)
Average port diameter 34.16
Port length 107.5
Single flow coef .597
Anti-reversion % 0
Chamber design Typical Wedge
Intake
STOCK 951 INTAKE:
Runner Dia @ head: 41.5...........Throttle Body CFM rating: 376 (from flow #)
Design: Tapered runners
Runner length:327
Runner Flow Coeff: 3...........Air Cleaner CFM: 326 (from stock AF dimensions)
Runner taper: 2.24
Manifold Type: Single plenum-EFI
Intake Heat: No heat.
Exhaust
Cam
Webcam #274
Intake Profile
Centerline. deg ATDC 106
Duration @ .050" 234
Open @ .050 ", BTDC 11
Close @ .050", ABDC 43
Max Lobe Lift .484
Gross valve lift .484
Duration @ .200" 163.6
Exhaust Profile
Centerline. deg ATDC 110
Duration @ .050" 234
Open @ .050 ", BTDC 47
Close @ .050", ABDC 7
Max Lobe Lift .484
Gross valve lift .484
Duration @ .200" 163.6
Lobe separation 108
Turbo
LINDSEY RACING Stage 5 "Club" turbo (Turbonetics 60-1)
Island CFM 544.67
Island pressure ratio 1.725
Island efficiency % 78
Surge CFM 320.66
Turbine nozzle diameter 1.26
Intercooler
LINDSEY RACING Stage 5
intercooler CFM 167